The position of a(n) is a part-time job. A. florist B. artist C. preschool teacher D. dental nurse 63 Which of the following is the most important for the childcare job? A. Cooking skills. B. Childcare experience. C. The ability to start work in two weeks. D. The ability to work well with other people. 查看更多

 

题目列表(包括答案和解析)

以下是用Scilab编写的程序,输出a,b的含义是________________.

a=input(“please give the first number”)

b=input(“please give the second number”)

while a<>b

   if a>=b

    a=a-b;

   else

    b=b-a;

  end

end

print(%io(2),a,b)

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以下是用Scilab编写的程序,输出ab的含义是________________

a=input(please give the first number)

b=input(please give the second number)

while a<>b

   if a=b

    a=ab

   else

    b=ba

  end

end

print(io(2)ab)

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i是虚数单位,
5i
2-i
=(  )
A、1+2iB、-1-2i
C、1-2iD、-1+2i

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函数f(x)=-
x
ex
(a<b<1),则(  )
A、f(a)=f(b)
B、f(a)<f(b)
C、f(a)>f(b)
D、f(a),f(b)大小关系不能确定

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对于非零向量
m
n
,定义运算“#”:
m
#
n
=|
m
|•|
n
|sinθ
,其中θ为
m
n
的夹角.有两两不共线的三个向量
a
b
c
,下列结论:
①若
a
#
b
=
a
#
c
,则
b
=
c
;②
a
#
b
=
b
#
a

③若
a
#
b
=0
,则
a
b
;④(
a
+
b
)#
c
=
a
#
c
+
b
#
c

a
#
b
=(-
a
)#
b

其中正确的个数有(  )
A、1个B、2个C、3个D、4个

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